Megan Fox punches Machine Gun Kelly in ‘Midnight in the Switchgrass’ trailer – Page Six

Megan Fox is a true knockout.

The actress punches boyfriend Machine Gun Kelly smack in the face in the first trailer for their upcoming thriller “Midnight in the Switchgrass.”

Fox, who plays an FBI agent in the flick, wears a black top and miniskirt while undercover in a hotel room in the trailer, which was shared Wednesday by Entertainment Tonight. As MGK enters the room and continues to creep closer to her, Fox winds up and lets him have it.

Machine Gun Kelly and Megan Fox in Midnight in the Switchgrass
Machine Gun Kelly and girlfriend Megan Fox are seen in their upcoming thriller, “Midnight in the Switchgrass.”
Emmett Furla Oasis Films

Directed by Randall Emmett, who is the fiancé of “Vanderpump Rules” star Lala Kent, the thriller also stars Bruce Willis, Emile Hirsch and Lukas Haas.

Fox, 35, and Kelly, 31, met on the film’s set early last year. Rumors of their relationship emerged in May, the same month the “Transformers” actress split from husband Brian Austin Green, who is the father of her three children. Fox filed for divorce from Green, 47, six months later.

Megan Fox in Midnight in the Switchgrass
Fox plays an FBI agent in the film, which was directed by Randall Emmett, the fiancé of “Vanderpump Rules” star Lala Kent.
Emmett Furla Oasis Films

Although Fox’s character kicks MGK’s butt in the new trailer, in real life the rapper — whose prior film credits include “Bird Box,” “The Dirt,” and “Project Power” — and Fox often can’t keep their hands off each other with PDA.

Over the weekend, Kelly, whose real name is Colson Baker, gave the actress a piggyback ride while checking out Logan Paul and Floyd Mayweather’s boxing exhibition in Miami. In late May, the couple brought the heat to both the iHeartRadio Music Awards and the Billboard Music Awards, which included some tongue action on the red carpet.

Megan Fox and Machine Gun Kelly
Fox and Kelly strike a sultry pose at this year’s Billboard Music Awards.
Getty Images for dcp

“Midnight in the Switchglass” is slated to be released on July 23.